[Mp4-tech] Question Regarding the Deblocker in H.264

[Gary Sullivan]

You need to think about two types of edges: Interior edges (edges inside
the macroblock) and exterior edges (edges between macroblocks).
For interior edges, if the motion vectors of neighboring prediction
blocks differ even if the , that can generate blocking artifacts, so
such cases are filtered.
For exterior edges that is true as well, but also the presence of
non-zero coefficients in a neighboring macroblock can cause the edge
between those macroblocks to be filteres.
There might also be some special issues relating to Chroma DC and
Intra_16x16 luma DC, although I think you'll find the spirit of the
design consistent.  There is nothing in the standard called "cbp" so
your question is a little vague.
Best Regards,
Gary Sullivan
________________________________
	From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org] On Behalf Of Nitin PAI
	Sent: Wednesday, September 13, 2023 4:54 AM
	To: mp4-tech lists.mpegif.org
	Subject: [Mp4-tech] Question Regarding the Deblocker in H.264
	Hi, 
	In h264 baseline profile, i want to know if the cbp is zero does
any deblocking takes place for that entire macroblock?  
	Thanks,
	Nitin 
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